Diethyl (ethoxymethylene)malonate → Diethyl 2-([[3-methyl-1-(2-pyridinyl)-1H-pyrazol-5-yl]amino]methylene)malonate

Participants

Reaction Conditions

Reaction Steps

A mixture of diethyl ethoxymethylenemalonate (32.5 g, 0.15 mol) and 3-methyl-1-(2-pyridinyl)-1H-pyrazol-5-amine (23.8 g, 0.137 mol) was heated under reflux at 120° C. for 1 hour. After the mixture was allowed to cool to room temperature, the reaction solvent was evaporated under reduced pressure. The crude crystals thus obtained were filtered and washed with diethylether to give the title compound (45 g, 96% yield).

Provenance & Evidence